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MAGNA Series, Counter / Totalizer Input Large Digit Displays

For Pulse Counts and Other Totals, such as Distance or Volume.

Standard Features

  • Choice of 2-1/4", 4", 6" or 8" digit heights
  • Choice of 4 or 6 digits with decimal points
  • Choice of normal or outside viewing brightness
  • Easily scaled to engineering units
  • Pulse rates from 0 to 40 kHz
  • Choice of panel mount, wall mount or suspension mount
  • Choice of 95-264 Vac or 11-30 Vdc power
  • Sealed to NEMA-4 (IP65)
  • Only 3.0" (75 mm) deep
  • Programmable from front panel
  • Optional two or four 2A relay outputs, analog output, serial I/O

MAGNA Series Counter / Totalizer Input Large Digit Displays accept frequencies from 0 to 40 kHz. They accept most common industrial pulse inputs, namely contact closures, NPN or PNP proximity sensors, 5V logic pulses, 24V PLC pulses, and quadrature encoders. The units are easily scaled to display totals in engineering units such as feet, meters, gallons, or tons. An isolated 24V excitation output is standard to power active sensors and encoders. In totalizer mode, the meter can add together and scale counts from up to 4 independent input signals.

Viewing distances up to 320 feet (100 m) are achieved with oversize digits. A rule of thumb is that viewing distance in feet is 40 times digit height in inches, or in metric terms, that viewing distance in meters is digit height in millimeters divided by 2.

Four digit heights are available:  57 mm (2-1/4"), 102 mm (4.0"), 150 mm (5.9"), and 200 mm (7.9"). Solid segments are used for normal brightness 2.2" and 4.0" digits. Individual 5 mm LED pixels are used for larger digits and outdoor brightness versions. The number of digits can be 4 or 6.

Indoor or Outdoor Viewing: MAGNA Series Displays with normal brightness LEDs can be read across an entire plant floor to keep workers informed without leaving their work area. Displays with outdoor brightness LEDs can be read across an industrial yard, parking lot or roadway, for example to display vehicle load. Available mounting options are panel mount, wall mount and suspension mount. Environmental sealing to IP65 (NEMA-4X) is standard.

Options include two or four 2A relays, an analog output, an RS232 or RS485 serial data output, and 95-264 Vac or 11-30 Vdc power.

Intuitive Setup is normally provided by means of built-in front panel switches, which can be locked. It is also possible to remotely wire four pushbuttons to the display.

Pulse input board

Serial data output boards

Relay output boards

Analog output boards

Types Produced to IPC 610 Class 2 Standard
  UL ISO9001:2008 QA
Pulse Inputs
Number of Inputs 4
Signal Types Configurable for contact closures, NPN or PNP proximity switches, 5V logic pulses, 24V pulses, quadrature
Frequency Range 0-40 kHz in totalizing mode
Debounce Programmable to eliminate false counting from contact bounce.
Number of Digits 4 or 6
Digit Height 57 mm (2-1/4"), 102 mm (4.0"), 150 mm (5.9"), or 200 mm (7.9")
Digit Color Red
Brightness Variable
Numeric Format or
Display Update Rate 3 readings/second above 3 Hz, otherwise signal pulse rate.
User Controls
Scaling Digital direct or theoretical scaling with scale & offset.
Filtering Digital filtering, time constants adjustable from 0 to 25 sec.
Rounding Selectable last-digit rounding of 1, 2, 5, 10, 20, 50 units.
Linearization Up to 10 points, direct or theoretical calibration.
Logic Inputs
Front Panel Controls Four buttons to set time, date, alarms, etc.
Logic Functions Three logic inputs, individually configurable for Hold, Reset, Tare, Peak / Valley, Net/Gross, Memory Address.
Logic Levels Normally open, NPN or contact closure input to activate. 5V open circuit, 1 mA switched current.
AC Power (standard)  100-240 Vac
DC Power (option) 11-30 Vdc
Max Consumption 30 VA
Analog Output Option
Output Levels 0-20 / 4-20 mA into 0 to 500Ω, 0.4 µA resolution.
  0-10V into loads > 600Ω, 0.2 mV resolution.
  -10 to +10V into loads > 600Ω, 0.4 mV resolution.
Resolution 16 bits
Accuracy 0.1% of range
Stability 50 ppm/°C
Output Isolation Isolated from input and power
Scaling Digitally scalable
Special Features Forward or reverse action possible.
Can be set to operate from net or gross value.
Alarm Output Option
Relay Type Two or four relays rated 2A, 250VAC, SPDT
Special Features Adjustable hysteresis
  Energize or de-energize on trip.
  Adjustable timers to set energize and de-energize delays. Can also be set to pulse for applications needing less than 100% duty cycle.
  In-band and out-of-band alarm function.
  Manual and automatic in-flight compensation.
  Can be set to operate from net or gross value.
Serial Data Output Option
Output Types RS232 or RS485, addressable, on demand or continuous output.
Special Features Can include time and date with RTC option fitted.
  Can be set to operate from net or gross value.
Storage Temp. -20°C to +70°C
Operating Temp. 0°C to 50°C, non-condensing. -25°C to 50°C, non-condensing, with MHTR AC heater option.
Sealing IP65 (NEMA4) standard, all-round
Connections M12 compression glands for round cable, diameter 3.0 to 6.5 mm (0.118" to 0.256")
Mounting Wall mount, suspension mount, panel mount

Number of Digits & Case Dimensions

Display Format
Case width x height 4 Digits 6 Digits
57 mm (2.2") digits 279 x 155 mm (11.0" x 6.1") 376 x 155 mm (14.8" x 6.1")
102 mm (4.0") digits 434 x 196 mm (16.7" x 7.7") 616 x 196 mm (24.3" x 7.7")
150 mm (5.9") digits 514 x 247 mm (20.2" x 9.8") 744 x 248 mm (29.3" x 9.8")
200 mm (7.9") digits 664 x 298 mm (26.1" x 11.7") 984 x 298 mm (38.7" x 11.7")
Case depth 75 mm (3.0")
Note:   Models with 57 mm (2.2") digits, 4 digits and 4 relays require the larger 6-digit case. For panel mount versions, add 18 mm (0.7") to case width and height for the bezel and 25 mm (1.0") for cable glands in back of the case.
Ordering Guide
MAGNA Series Large Digit Totalizer Displays
Click on the radio buttons to build a model number with pricing (shown below the Ordering Guide). Prices are in US dollars and do not include shipping or duty charges (export sales). Please see our explanations and limitations applicable to pricing and online orders. Prices shown are in US Dollars and are Laurel's manufacturer's suggested retail price (MSRP) in the USA. Orders are processed manually, not directly by our shopping cart system. You don't have to supply credit card information when placing an online order.

North American Orders. Laurel does not sell factory-direct in the USA or Canada. Online sales orders are filled through distribution. During the ordering process, you will have the chance to select an authorized Laurel distributor, or you can ask Laurel to refer you to a distributor. The distributor will then contact you to quote shipping, tax and duty (where applicable), and arrange for payment.

International Orders. If your ship-to address indicates that you are outside of the USA or Canada and Laurel has a distributor in your country, we will forward your order to that distributor for follow-up. If Laurel does not have a distributor in your country, we will email you an order acknowledgment and a pro forma invoice which states the product price, shipping charges, and wire transfer information, which includes a $25 bank wire transfer fee.

Questions about your order? Please email your distributor or
MAGNA units are built to order. Magna orders are non-cancelable, non-returnable.
   SKU  Descriptions Price
Base meter
M24 2 inches (57 mm), 4 digits. Display to $480
M24UM 2 inches (57 mm), 4 digits. Display to
Includes extra width to fit relay, analog output, serial output or heater options.
M26 2 inches (57 mm), 6 digits. Display to $630
M44 4 inches (102 mm), 4 digits. Display to $780
M44UM 4 inches (102 mm), 4 digits. Display to
Includes extra width to fit heater option
M46 4 inches (102 mm), 6 digits. Display to $1030
M64 6 inches (150 mm), 4 digits. Display to $1390
M66 6 inches (150 mm), 6 digits. Display to $1410
M84 8 inches (200 mm), 4 digits. Display to $1700
M86 8 inches (200 mm), 6 digits. Display to $1740
Signal Input (one required, select one)
MCR Counter / ratemeter $110
Analog output board (one optional)
None $0
MAO1 4-20 mA $80
MAO2 0-10V $80
MAO3 -10V to +10V $140
Relay output board (one optional)
None $0
MRL1 Two 5A, 250 Vac relays $70
MRL2 Four 5A, 250 Vac relays $90
Serial Data Output (one optional)
None $0
MO232 RS232 $80
MO485 RS485 with Modbus ASCII $110
Case and mounting (one required)
MT1 Panel mount, black NEMA-4 case $190
MT2 Wall mount, black NEMA-4 case $100
MT3 Suspension mount, black NEMA-4 case $100
Meter modifiying options (not shippable separately from meter)
MRDLV Daylight viewing brightness for operation down to 0°C (32°F) instead of normal indoor brightness $150
MHTR AC heater for outdoor operation down to -25°C (-13°F) $360
MPS2 11-30 Vdc power instead of normal 85-265 Vac power $100
Add-on Options
MRP Remote programmer with 2 meter cable (display can also be programmed from front panel) $150
Configured model number M24-MCR-MT2
Configured price per model $690
Quantity 1
Extended price $690
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